@Data
@TableName("product_specs")
public class ProductSpec {
    @TableId(type = IdType.AUTO)
    private Long id;
    private Long productId;
    private String color;
    private String size;
    private BigDecimal length;
    private BigDecimal width;
    private BigDecimal height;
    private BigDecimal price;
    private Integer stock;
    private LocalDateTime createdAt;
} 